一种用于波荡器磁中心高精度标定的磁靶标

俞成; 蒋志强; 周巧根

doi:10.11884/HPLPB201830.180030

一种用于波荡器磁中心高精度标定的磁靶标

doi: 10.11884/HPLPB201830.180030

俞成^{1, 2,},
蒋志强¹,
周巧根^1, ,

1.
中国科学院上海应用物理研究所, 上海 201204
2.
中国科学院大学, 北京 100049

基金项目:

国家青年自然科学基金项目 11405255

详细信息

作者简介:
俞成(1993—), 男, 硕士研究生, 从事磁中心标定技术研究; yucheng@sinap.ac.cn

通讯作者:
周巧根(1964—), 男, 博士生导师, 从事插入件技术研究; zhouqiaogen@sinap.ac.cn

中图分类号: TL505
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- 被引次数: 0
出版历程
- 收稿日期: 2018-01-23
- 修回日期: 2018-04-08
- 刊出日期: 2018-08-15

A magnetic landmark for high precision undulator magnetic fiducialization

Yu Cheng^{1, 2
,},
Jiang Zhiqiang¹,
Zhou Qiaogen^{1
, ,}

1.
Shanghai Institution of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 波荡器磁中心轴的标定是保证自由电子激光装置波荡器安装准直精度的重要前提。介绍了一种利用磁靶标实现波荡器磁中心高精度标定的方法。设计制造了由若干块永磁块组合构成的磁靶标，其能产生一正一斜两个高梯度四极场。测出了两四极场垂直分量的零点位置分布并依此给出了磁靶标的具体使用方法。结果表明：标定后的波荡器磁中心在磁靶标坐标系中水平方向测量精度好于±20 μm，垂直方向测量精度好于±2 μm。
- 波荡器 /
- 磁中心标定 /
- 磁靶标 /
- 四极场 /
- 霍尔探头
Abstract: The undulator magnetic fiducialization is an important prerequisite to ensure the undulator segments' installation precision of the FEL device.A device called"magnetic landmark"was developed to achieve high precision undulator magnetic fiducialization.The landmark consists of several permanent magnets which can generate a normal and a skew quadrupole field with high gradient in two orthogonal directions.Positions of the zero point of the two quadrupole fields' horizontal component were measured and the specific use of the landmark is given.The results show that the accuracy of the magnetic center axis of an undulator after fiducialization in the landmark coordinate system is better than ±20μm in the horizontal direction and ±2μm in the vertical direction.
- undulator /
- magnetic fiducialization /
- magnetic landmark /
- quadrupole /
- Hall probe

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图 1 翻转测量原理

Figure 1. Principle of a flip test

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图 2 磁化块排列结构

Figure 2. Configuration of the permanent magnet array

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图 3 理论计算中B_y零点的位置分布

Figure 3. Position distribution of the B_y zero point with the theoretical calculation

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图 4 磁靶标机械结构

Figure 4. Mechanical design of the magnetic landmark

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图 5 实测X_z和X_y的变化范围

Figure 5. Range of values for the measured X_z and X_y

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图 6 磁靶标的使用

Figure 6. Proposed use for the magnetic landmark

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参考文献(7)

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[3]	Levashov Y, Wolf Z. Tests of coordinate transfer from magnetic to mechanical reference for LCLS undulator fiducialization[R]. SLAC Report LCLS-TN-05-10, 2005.
[4]	Wolf Z, Levashov Y, Weidemann A. LCLS undulator fiducialization plan[R]. SLAC Report LCLS-TN-07-02, 2007.
[5]	Wolf Z, Kap lunenko V, Levashov Y, et al. LCLS undulator tuning and fiducialization[C]//Proceedings of the 22nd Particle Accelerator Conference (PAC'07). 2007.
[6]	于成浩. 三维准直测量技术在上海光源中的应用研究[D]. 上海: 中国科学院上海应用物理研究所, 2008. Yu Chenghao. The application research of 3D survey and alignment technique in SSRF. Shanghai: Shanghai Institution of Applied Physics, Chinese Academy of Sciences, 2008
[7]	柯明, 于成浩. 关节测量臂在上海光源元件标定中的应用[J]. 强激光与粒子束, 2009, 21(12): 1885-1888. http://www.hplpb.com.cn/article/id/4309 Ke Ming, Yu Chenghao. Application of articulated arm to components' fiducialization in Shanghai Synchrotron Radiation Facility. High Power Laser and Particle Beams, 2009, 21(12): 1885-1888 http://www.hplpb.com.cn/article/id/4309